"King tubby surrounded by the dread at the national arena" (as originally worded) first came out as a UK pre-release with the title printed on a white label. The sleeve was a blank white sleeve with the same notes announcing the LP's contents credited to Carl Gayle of Black Music magazine, glued on to the front and back - it came out late 1975/ early 1976). This was quickly followed up by a proper UK Fay Music issued in 1976 according to the label.

Not sure if there was a JA release - does anyone know?

It was later re-released in the early 80's on I think Studio 16 - and again more recently.

I would suspect the vast majority of those have very much nothing to do with king tubbys aside from possibly being mixed there by someone other than tubbys. there are really very very few true "king tubby albums" to choose from, probably less than 5; all the rest use the name but rarely have much to do with him personally.